1 Corinthians 1:17-18, 21, 30-31

For Christ sent me not to baptize, but to preach the gospel: not in wisdom of words, lest the cross of Christ should be made void. For the word of the cross is to them that perish foolishness; but unto us who are saved it is the power of God.

For seeing that in the wisdom of God the world through its wisdom knew not God, it was God’s good pleasure through the foolishness of the preaching to save them that believe.

But of him are ye in Christ Jesus, who was made unto us wisdom from God, and righteousness and sanctification, and redemption: that, according as it is written, He that glorieth, let him glory in the Lord.